Fuel burner



d* Patented' Jupe ze,` 192e.

RR starren; ,onbs'rna'rnlvryonn pensee; elimina; assreionof flattened naamiionomnmpn MonTREAL, banana -Y fimpennata;filed-1311131'20,1925.y 'se'riaiiNdil44,650. n

l l *l This." inventionf-` relates lbroadly?i'toiinproveniente' inV burners' -for-fffluid fuel and merel particularl'yftoburners for-l1qu1d` iuel suoliE asjroilj,` andthe/ object of the'linventioni is to l'irevi'de a# 'burner n of theV in j -ector er latomizer 4 type; designedj tol bev supplied? with p almot-ive fluid under pressure-such is-steam` o'r'rai'r, for`^-' tli pnrpose of dra-wing the'. "fuel Ainto ithel .burner bjsuctionl and atoinizing tHefuel 5to# faciliV tel combustion thereofif t Al further-"objeetis toprovide aburner of siiple, 'inexpensive and? VdurableY const'rubf tionf whi'ch mayg'gbe readily" cleaned? *and which willntL require adjustnient.

Various .otherobj eet's* andlztheadvantages The" burnen comprises nrner-fV an'df' ,outerv partei the' inner part having ychannels for fe5y off fuel andinotive fluid;A and the partto parliA uniting'j with the inner 'forma-'Venturi outlet'. l

In the acconipanying drawings -whieh illustrate-- the` preferred" embodimentv'of the invention butto thevprecise details a'ndfproportions of whichb the invent-ion is not of neeessityeofiiiedg-f a Fig. 1 is afcentral horizonal longitudinal section of the burner. Fig. 2 is a central longitudinal, vertical section of the burner. Y Y

Referring more particularly to the drawings, 11 designates a short body portion,

' preferably cylindrical in form, having at.

its'forward'end an externally threaded portion 12 of somewhat less'diaineter, which vin t-urnvcarries atv its forward end a portionl 130i stillfurther reduced diameter where by shoulders 14 and 15 are formed. The Vfreeend of the part v13 is tapered at 16 very nearly to a point, The three parts 11, 12 and 13 are co-axiallyarranged and provided with a cylindrical bore 17 connnon to all three parts, which extends troni the back end oi'. the part 11 to approximately the coinnienceinent'of the taper 16 and is thereafter sharply tapered to a .very small bore 1,8,`

which extends through the end of the part 13. A lateral passage 19 internally threadmunicates With the bore 17, and the rear end of the bore is closed bya screw plug 2O or other suitable devicewhich maybe4 removed ed for the connection'ot` a supply pipe com-1' uponI occasion i forthe purpose-joill cleaning-f leads preferably at anangle 'toi the axisot thefbur'nerinto therear Yend offthefbo're 21.

Gti

Preferably the axes of thepassages-ltlfand afre* located at an yangle ofl 900 apart,l so j i uit. the`t burnerfY-thepassage 1.9is'lat oneside. Y

A. caporn'ozzle 231s provided, being'in'- screw -on the part '12 and 'abut theV shoulder- V141 kThis*cap'is' providedwith an internal slicuilder-` 2412'A toibespaced some distance in fronti;A f" the#l 'shouldei- 15; BeyondY the threaded portion, the capv` is provided( with a` bore* 25''sniiieiently larger in diameter' than the part/"18 to formanl annular' space .w-henrthef pas-Sage' aa is at the fopofl into-wliichthepassage-21 opens: Th'efors ward end ott tliis v passage is taperedl at' sub# sta'ntially tliefisanie ainglel as the tapered vpart 16"aifid"l loiisnch"dimensions that whenthe Ycap 1 is i'n-V position f a: narrow annu-lar passage 2 6 is formed between the two tapered sur?4 v faces. tends slightly. beyond the end ofthe part 13. From the end` of `the taperedbore to the `end of thecap, the bore diverges or flares, 1s-shown vat 27, the angle of diver- The tapered bore of the part 23 eX-.

gence being preferably the salnea's the angle of convergence. i

Thev two parts of the burnerl are assembled, as shown in thejdrawings,` and a motive fluidsupply pipe connected to the inlet 19 and the fuelsupply pipe connected to ,the inlet 22. In certain installationsit is preferable to arrangevthe burner Vwith a downward inclinatio'nland it is for this purpose that the-'fuel inlet 22 is arranged at the vburner is tobe'mounted V4and according'.

to other vrequireineinzs of the installation.

l/There' the burner is to be downwardly in- Van angle tothe axis ofthe burner, as shown,

clined as alreadystated, it, sc'onvenient to arrange the fuel inlet 22 at the top or bottom, so that a vertically arranged pipe may support the'burner at the desired anglervof inclination. f Y Y The operation of tlie'burneris extremely simple. Motive fluid, such as compressed air or steam is admitted tothe/passage 17 j and escapes throughvthe reduced outlet 18 atrveiv high velocity. VThe rush of the fluid Vthrough the small endA of the tapered bore 25 produces a suction in the annular pas-v sager26, which serves to draw fuel through the passages 21 and 22 and through a sup-` ply pipe from any suitable source. The 'natural cone of dispersal of the motive fluid substantially fills the reduced end` of theV bore 25, so that fuel drawn VthroughV the aiinulai' passage 26Vis finely divided oratonilizedand Avery* intimately mingled with the v`inotiveffluid. f

Havin' thus describedin 77Vinvention what T y .u d i a i claim is 1. A fluid fuel burner comprising aibody shouldered to forni a rear part, a smaller externally threaded intermediate VpartY and a stillsmaller front part,v tapering at its for#V Ward end', a motive liuid passageV extending axially through all Vthree body part-s and reduced in diameter'atits forvvardend, a fuel passage parallel with the first passage opening through therrfront shoulder of the body, an internally shouldered cap `taper bored in front of its shoulder and screwed in rear Vof its shoulder on the intermediate partof the body, the cap shoulder and front body shoulder being spaced and formingan annular channel into Which the fuel passage lopens and the bore of the cap beingslightly larger than the front-part of the body, there- Vpassage for egress of fuel.

raadsels forward end a luO in the rear end 'of said.

Y Y l v D Y Y .Y passage giving Aaccess fory cleaning Without disinountingvthe burner, a yfuel .passage parallel With the first passage opening through the front shoulderv of the body7 an internally Y shouldered cap Ytaper bored in front "ofits" shoulderv and screwed in rear of its shoulder on the intermediate partvof the body, the cap shoulder andfroiit body shoulder being maintained yin spaced relation byyengageinent ofthe rear end of the `cap and forming an ani'iularchannelV into Which the 60 the 'rear Vshoulder of the body, suoli spacing fuel'passage opens ai'idtliebore oi Lne capsV being slightly larger than the frontpai't of tlie body thereby to form a narrou7 tapering annular passage communicating with the first annular passage for egress of fuel, the

ybore .of the cap being flared beyond the end of the body and at substantially the same angleas the taper, 'and' radial .inlet passages for the motive fluid and .fuel passages arranged approximately90O apart, the fuel inlet passage being' additionally inclinedtolwird the front of the burner. y

ln Witness whereof, I have hereuntoset my hand. i

HARRYF. CLAYTON 

